The elder to the beloved Gaius, whom I love in truth.
The elder unto the wellbeloved Gaius, whom I love in the truth.
THE ELDERLY elder [of the church addresses this letter] to the beloved (esteemed) Gaius, whom I truly love.
The elder unto Gaius the beloved, whom I love in truth.
From the elder. To my dear friend Gaius, whom I truly love.
The Elder, to Gaius, most beloved, whom I love in the truth.